General Science - Physics (Basics)
Which of the following is the chemical formula of washing powder commonly used for laundry?
Which of the following is the chemical formula of washing powder commonly used for laundry?
medium Q5 of 15
Step-by-Step Solution
Step 1: Identify chemical in washing powder
Washing powder contains surfactants that help remove dirt and grease from clothes.Step 2: Recall chemical formula of common surfactant
Sodium dodecyl sulfate (C12H25SO4Na) is a common surfactant in washing powders. Sodium carbonate (Na2CO3) is washing soda, sodium bicarbonate (NaHCO3) is baking soda, and calcium oxide (CaO) is lime.Final Answer:
C12H25SO4Na → Option BQuick Check:
Washing powder surfactant formula = C12H25SO4Na ✅
Quick Trick: Surfactants in washing powder have long hydrocarbon chains.
Common Mistakes:
- Confusing washing soda or baking soda with surfactants.
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